Do you have dimples?

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Our youngest son (we have two) has one little dimple in his left cheek. It's so cute! I don't have them and neither does our oldest son. My husband does, but he seldom smiles wide enough for it to show. Do you or your kids have dimples? I know that it's a genetic thing, but I can't remember (it seems like it's been forever since I was in school, lol) how the genes are passed on. Recessive and dominate genes and so on. Like brown hair is dominate over blonde and so on.